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Question

# While cooking, a chef cuts his hand with a sharp-edged knife. To his surprise, his hand did not get a cut with a spoon even on the application of a greater force. What can be a possible reason for this?

A
For the same force, pressure developed due to the knife is much smaller because of its sharp edge.
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B
For the same force, pressure developed due to the spoon is also the same.
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C
For the same force, pressure developed due to the knife is much larger because of its sharp edge.
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D
Amount of force that actually acts on the hand is more in the case of the knife.
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Solution

## The correct option is C For the same force, pressure developed due to the knife is much larger because of its sharp edge.Since the edge of a knife is very sharp, the area on which the force is applied by it is smaller. Therefore, the applied pressure is higher in the case of the knife. Whereas for a spoon, it has more area. Hence, the pressure acting on the hand is less for the same force applied with the spoon.

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